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https://issues.apache.org/jira/browse/BEANUTILS-309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12575336#action_12575336
]
James Carman commented on BEANUTILS-309:
----------------------------------------
Even the Java language doesn't allow you to do what you're trying to do here
(without some qualification):
public class Foo
{
public Foo(String param)
{
}
public Foo(Integer param)
{
}
public static void main(String[] args)
{
new Foo(null).toString();
}
}
This results in :
Error:Error:line (17)reference to Foo is ambiguous, both method
Foo(java.lang.String) in Foo and method Foo(java.lang.Integer) in Foo match
You have to cast the parameter so that the compiler knows what you're trying to
do ("this is a String non-object"):
new Foo((String)null).toString();
which is essentially what you'd be doing by calling the
invokeConstructor(Class,Object[],Class[]) method.
> Passing a null argument to ConstructorUtils.invokeConstructor causes
> NullPointerException
> -----------------------------------------------------------------------------------------
>
> Key: BEANUTILS-309
> URL: https://issues.apache.org/jira/browse/BEANUTILS-309
> Project: Commons BeanUtils
> Issue Type: Bug
> Affects Versions: 1.7.0, 1.8.0-BETA
> Reporter: Xavier Poinsard
>
> I am invoking ConstructorUtils.invokeConstructor with an array of arguments
> and one of these arguments is null.
> This causes a NullPointerException line 120 in Class ConstructorUtils.
> Since its not forbidden to pass null argument to a constructor,
> ConstructorUtils should handle it.
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